Offline Evaluation  
To conduct a fair comparison, we acquire the results according to the widely-used Karpathy test split [1]}.
The MSCOCO validation and test set contain 5,000 images each, and the number is 1,000 images for Flickr30k Entities.
As shown in Table REF , for two datasets, all baselines equipped with our approach receive performance gains over all metrics.
More encouragingly, based on the GVD [2]} and AoANet [3]}, which are the previous state-of-the-arts on Flickr30k Entities and MSCOCO datasets, respectively, our approach sets the new state-of-the-art performance on the two benchmark datasets, achieving 62.7 and 133.4 CIDEr score on Flickr30k Entities and MSCOCO respectively, demonstrating the effectiveness and the compatibility of the proposed approach.
